HALO 90 Å AQ-C18, 2.7 µm, 4.6 x 150mm

Poroshell 120,EC-C8,4.6x30mm,2.7um

HALO 400 Å C4, 3.4 µm, 10.0 x 150mm

HALO 160 Å C30, 2.7 µm, 3.0 x 5mm, Guard Column 3